fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [9.4% done] [  8860/  7324 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [13.3% done] [  5748/ 11800 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [16.1% done] [ 11372/  3428 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [18.8% done] [ 10608/  2748 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [21.9% done] [ 12460/  1024 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [23.5% done] [  9716/  2736 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.7% done] [  9120/  5404 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.6% done] [  9468/  3836 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [29.7% done] [  3996/  8740 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [32.4% done] [  8432/  4064 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  9668/  1968 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [ 10708/  1060 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.7% done] [  5640/  5672 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [42.1% done] [  3124/  6628 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  5072/  4516 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  7644/  1748 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  7408/    56 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  4144/  5288 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  1672/  6584 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.7% done] [  6444/   996 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20659, got signal=6
Threads: 2: [mm_] [56.1% done] [  3600/  5088 kb/s] [eta 00m:18s]
Threads: 2: [mm_] [58.5% done] [  4432/  3887 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20658, got signal=6
Threads: 1: [m__] [61.0% done] [  3868/  4800 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  1596/  7224 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20657, got signal=6

fio: (groupid=0): err= 0: pid=20657
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.1%, 4=36.1%, 8=58.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.1%, 10=2.9%, 20=4.7%, 50=24.8%, 100=15.9%
     lat (msec): 250=35.4%, 500=14.1%, 750=0.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20658
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.4%, 4=30.1%, 8=65.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=3.1%, 20=3.4%, 50=15.7%, 100=20.5%
     lat (msec): 250=51.2%, 500=3.9%, 750=0.2%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20659
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=2.9%, 4=33.7%, 8=62.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.2%, 10=1.2%, 20=2.4%, 50=14.0%, 100=26.3%
     lat (msec): 250=52.2%, 500=2.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3231/2459, merge=484/219, ticks=60760/60544, in_queue=121304, util=99.16%
0.22user 0.33system 0:27.13elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2495minor)pagefaults 0swaps